Bottle cap



l e. KALKBRENNER.

BOTTLE GAP.

APPLICATION FILED DECZ, 1919.

Patented Oct, 3L, 19222.

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Patented @et 3l 1922.

nutren stares GEORGE KALKBRENNER, 0F -DARIOIL OHM?. 'i

BOTTLE CAP.

e Application mea December 2s, i919.' serial no. 347,318..

crimped edge thereof is of such formation as to insure a firm retentionof aL cap in an applied position upon the neck of a bottle, and yet to permit of the application of a cap in its applied position with relative ease and facility.

Another object of the invention resides in a bottle cap wherein vis provided a body portion having a depending annular` wall which is provided with suitable retaining crimps, and the lower edge of said wall being outwardly flared to provide a reinforcing flange for the purpose of enhancing the resilient action of the crimped wall, and to provide said cap at its linejof jointure be-` tween said flange and wall with a plurality of openings, which serve to slightly decrease the general rigidity of said flange so that the. crimped wall of the cap may be sprung into engagement with the bead of a bottle neck with but the application of ordinary and easily accessible pressures. i

It has been found in applying bottle caps of standard construction to bottles or other similar receptacles that said caps are of such construction as to require an exercise of considerable force in order to spring the same into their applied positions. This force is not always accessible to the average person, and as a result, the caps are very likely to be improperly applied so that the', contents of the receptacles covered thereby are apt to be spoiled. However, through the principles of the present invention, ordinary crimped metallic bottle caps are so formed as to lessen somewhat the rigidity of the crimped portions so that the latter may be readily sprung into engagement with the necks of said receptacles, and to accomplish this end in such manner that none Vof the fluid sealing properties of the cap will be sacrificed.

For a further understanding of the invention, reference is to be had to the fol` lowing description and to the accompanying drawing, in which a bottle cap has been.

shown wherein the preferred principles of the present invention are embodied. In the drawing:

Figure 1 isa top plan view of the bottle cap comprising the preferred form of the invention.v

Figure 2 is an edge elevation thereof.' Figure 3 isa fragmentary detailed vperspective view of a portion of the cap, and

Figure l is a detail sectional view showing the modified form of a weakened crimp. y Referring more particularly to the details of the invention, use is made ofa bottle cap l. This cap is of the usualxmetallic construction and comprisesa circular body portion 2, whose circumferentialI edge terminates in a depending annular wall 3, the lower edge of the wall 3 terminates in the out-turned circular vflange gli. IAs is customary, this cap `is stamped from a single blank of metal, and in its process of formac e tion the wall 3 is providedwith the usual indentations 5, the formation of which leav ing `a plurality of ribs 6 which extend bef` tween thewall 3 and the flange si.. As is customary, the indentations 5 are designed to be forced into resilient frictional engagement with the beaded portion of a bottle neck, (not shown), and ordinarilythe resiliency of said indentations is such as to firmly retain the cap in its applied or fluid sealing position upon such receptacle. However, through the instrumentality of the flange 4l, the general resiliency of the indentations is materially enhanced, since by the presence of the out-turned flange, it will be obvious that outward movement on the part of the indentations will be materiallyv arrested, and that it will be necessary to eX- ercise a considerable degree of pressure be fore the cap can be securely applied in connection with a bottle neck.

It is this element of pressure that has led to the adoption of the principles shown in the present invention. `Ordinary household implements and common bottle capping tools are not always sufficient to effect ease and facility in securely forcing such caps to assume their applied positions. It will be observed that by the presence of the flange s, and its peculiar positon with relation to the indentations 5, that high pressures are necessary in order to spread the indentations to permit the same to grip the neck of a bottle in the required manner. Large bottling concerns lll() are of course, usually equipped with mae chinesby means of which thiscapping op! of provided with a plurality of apertures '7.

' As shown, these apertures are locatedfatlthe line of jointure 8 existing. between the wall 3 and the'flange 1l. i By the presence of these aperturesit -will be apparent that when the cap is being forced downwardly upon the neck of a bottle, `the indentations will-bepermittedto conveniently expand by the elimination of material eife'ctedby the p'resenceoi` the apertures. In other words, y,the material surrounding and forming a part of the indentations-,will belcrowded, as it were, to-

ward and into said openings, lso that the freer and relatively unhindered expansion of Vthe indentations may be effected, `and in this manner the application ofther'capto the neck of a bottle `Correspondingly rendered more simple. It hasbeen found thatby locating` the apertures Vin the position stated, the best results may be attained,1thisbeing due tothe fact that by being' so located,-r said apertures are in a position to readily compensate #for the displacement of material caused by ythe has the ribs 6there` expansion of the indentations. Furthen it will be noted that the apertures do not eX- tend to the periphery of the flange 4, and as amatteroi fact are located within the confines of said flange. This construction eliminatesthe necessity of slitting; the flange into a alurality of sections, as it has been found that when so cut7 the lcap has its resiliency considerably reduced. It will thus be mani fest that by the provision oi the openings T, the resiliencyV of the indentations is maintained7 and yet the expansion of the indentations may bemore easily effected so as to sim l pli'fy the application'of thecap to the necks of bottles. y l l' 4 The structure disclosed in Figure l deviates romrthepreferred rform by merely weakening the resiliency oi the ribs 6 by forming notchesv9 therein in place of the apertures 7. The principals in both forms, however, are identical. I

'I claim: l l Vln a metallic bottle cap, a flatv circular body portion," an annular wall dependingfrom said body portion, said wallbeing provided with a multiplicity of resilient cap holding .indentations, an out-turned `flange integrally carried by `the lower edge oi? said wall,iribs extending between said flange and wall, and a plurality 'of apertures formed 'in said ribsintermediate their ends and situated to" lie ywithin the outer periphery of said flange. y n y In testimony whereof I allix my signature.

encuen KALKBHENINER. 

